Mining pools business is not considered illegal at the moment, and BTCChina reiterates that the BTCC mining pool service continue after the trading closure on 30 September. We have observed a turn of regulatory attitude towards Bitcoin and other cryptocurrencies. As 5 out of top 6 bitcoin mining pools are situated in China, it would be a disaster if internet connection of these mining pools were taken offline.
If ever then that their mining farms will be closed then, there are still other countries that will take over their share in the pool. China is not the only country that has low electricity cost but there are others as well. As of now, they are still mining and if ever after the conference they will say they will open again the exchanges then its good but I think their announcement to ban bitcoin again would not work anymore as people are already aware of their strategy and besides they have low market share now than before.